Atomizer



W. S. BOWEN May 23, 1939.

ATOMI ZER Filed Dec. 23, 1937 INVENT OR. llhamwm'flzy, BY

$3M, o W

ATTORNEYS Patented May 23, 1939 2,159,201

UNITED STATES PATENT OFFICE ATOMIZER,

William Spencer Bowen, Westfield, N. J.

Application December 23, 1937, Serial No. 181,273

6 Claims. (Cl. 29963) The present invention relates to atomizers erates to atomize the liquid, said atomized liquid and, more particularly, to spray heads of the robeing thrown outwardly and downwardly tatable type adapted to disperse a stream of liq through the openings between the arms of the uid as a fine mist or spray. More specifically, spider and between the flange on the spider and the invention relates to a new form of such spray the overhanging deflecting member. The above 5 heads whereby the liquid is atomized in an imdescribed construction of the upper surface of proved fashion. the spider provides for the free escape of the While atomizers of the rotatable spray head atomized liquid so that no backing up thereof type are well known to the art, existing forms of results.

10 this device present many inherent defects. A The novel features considered characteristic of 10 source of considerable dissatisfaction lies in the the invention are set forth with particularity in formation of the surface of such spray heads rethe appended claims. The invention itself, howsulting in obstructions to the release of the atomever, both as to its construction and its method ized liquid. In existing forms, these obstruc of operation, together with additional objects tions cause a backing up of the product upon and advantages thereof, will best be understood 15 the surface of the spray head, thereby interferfrom the following description of a specific eming with the operation and, more specifically, the bodiment when read in connection with the acefficiency, of the device. Another defect in existcompanying drawing, in which:

ing forms of this device is the lack of controlling Figure 1 is a plan view of the spray head with means to direct the flow of the atomized liquid. a portion thereof cut away; 20 It is a desideratum to impart a downwardly and Figure 2 is a cross sectional view of the spray outwardly directional movement to the spray as ead ta a o a l COYIGSDOIIdiHg the well as to effect a concentration thereof. line 2-2 of Figure 1 and looking in e d c- In view of the deficiencies in the prior art retion of the arrows. lating to atomizers, it is an object of this inven- Referring to the above drawing, in which like 25 tion to provide a spray head so formed that there numbers are used to designate like parts will be no backing up of the product on the throughout, and without limiting the invention surface thereof. to this particular form, a spider I is formed with Another object of the invention is to provide in a hub 2 and upwardly and outwardly extending" a spray head of the type described, a construcarms 3. The hub 2 is formed with a centrally 30 tion whereby the atomized liquid may be given located aperture 1 and bushing 6 to receive a a suitable direction and concentration. drive shaft, not shown in the drawing. The up- A further object of the invention is to provide per surface of the spider includes a flat portion a spray head to accomplish the above named ob- 4 adjacent the said aperture 1 substantially at jects which is of simple and economical conright angles to the central axis, a recessed por- 35 struction. tion 5 adjacent the said portion 4 also substan- According to one embodiment of the invention, tially at right angles to the central axis, and a a spider of some suitable material such as downwardly and outwardly extending portion duralumin is formed with a hub adapted to be provided by a flange 8. The inner surface 9 of secured to a drive shaft whereby the device may the arms 3 is everywhere oblique to the central 40 be rotated, said spider having a downwardly and axis. The ends of the arms 3 are machined to outwardly extending flange at its periphery and abut against a deflecting member !0 in the form having formed thereon spaced arms extending of a truncated cone adapted to be secured thereupwardly and outwardly. A deflecting member to. Tap holes II are formed in the ends of the in the form of a truncated cone is secured to arms to receive screws l2 which extend through 45 the arms of the spider in such a manner that openings I3 in the shield and which are fitted its elements are substantially parallel to the with suitable lock washers I4. The deflecting corresponding elements of the flange. The upmember ID is secured to the arms 3 in such a per surface of the spider is formed so that all position that the upper portion thereof over- 60 portions thereof are at an angle to the central hangs the upper surface of the spray head and axis of the device. In operation, a stream of the lower portion extends beyond the periphery liquid is directed against the upper surface of of the spider l. the spider substantially at the center thereof, The mode of operation of the device will be and the impact of the stream under centrifugal apparent from the above description. The spray- 65 force against portions of the rotating head ophead is secured to a drive shaft as stated and is rotated thereby. A stream of liquid is directed against the upper surface at or near the center, and is atomized by the impact and the rotation of the head. The rotation of the head operates to give the atomized liquid an outward direction, said atomized liquid escaping downwardly and outwardly through the openings provided by the arms 3 and between the deflecting member l0 and flange 8.

It will be seen that a spray head as described above provides considerable improvement in the art. One advantage of the construction shown is that the upper surface of the spray head permits the free flow of the atomized liquid so that no backing up thereof will result. Another advantage is that the combined use of a flange and overhanging deflecting member provides a control whereby the atomized liquid is directed downwardly and outwardly. A further advantage of the invention is that it provides the above named advantages in a construction which is simple and economical.

Although a certain specific form of the invention has been shown and described, many modifications thereof are possible and will suggest themselves to persons skilled in the art. The invention, therefore, is not to be restricted except insofar as is necessitated by the prior art and by the spirit of the appended claims.

I claim:

1. In an atomizer of the rotatable spray-head type, a spider comprising a hub formed with upwardly and outwardly extending arms adjacent the periphery thereof, said hub being adapted to be secured to a drive shaft and having all portions of its upper surface formed at an angle to the central axis, and said arms being formed with inner surfaces oblique to the said central axis.

2. In an atomizer of the rotatable spray-head type, a spider comprising a hub formed with upwardly and outwardly extending spaced arms, said hub having all portions of its upper surface formed at an angle to the central axis, inner surfaces on said arms formed at an angle to the said central axis, a deflecting member in the form of a truncated cone on the said arms, said deflecting member having its upper portion overhanging the upper surface of the hub and its lower portion extending beyond the periphery of the hub and beneath the upper surface thereof.

3. An atomizer of the rotatable spray-head type comprising a spider having a hub formed with spaced outwardly and upwardly extending arms, said hub having all portions of its upper surface formed at an angle to the central axis,

inner surfaces on said arms formed at an angle to the said axis, a flange on the hub, means to secure the hub to a drive shaft, a deflecting member in the form of a truncated cone, and means to secure the deflecting member to the arms of the hub, said deflecting member being positioned substantially in parallel relationship with respect to the flange.

4. In an atomizer of the rotatable spray-head type, a. spider comprising a hub, means to secure the hub to a drive shaft, spaced supporting arms extending upwardly and outwardly, a flange extending downwardly and outwardly, said spider having an upper surface including a portion at the hub substantially at right angles to the central axis, a recessed portion adjacent the said hub portion substantially at right angles to the central axis, a curved portion oblique to the central axis formed by the arms of the spider, and a portion oblique to the central axis formed by the flange on the spider.

5. An atomizer of the rotatable spray-head type comprising a spider having a hub formed with spaced outwardly and upwardly extending arms adjacent the outer periphery thereof, said hub having all portions of its upper surface formed at an angle to the central axis, inner surfaces on said arms formed at an angle to the said axis, a flange on the hub, means to secure the hub on a drive shaft, a deflecting member in the form of a truncated cone, and means to secure the deflecting member to the arms of the hub, said deflecting member being positioned with its upper portion overhanging the upper surface of the hub and its lower portion extending beyond and beneath the periphery of the hub.

6. An atomizer of the rotatable spray-head type comprising a spider having a hub formed with spaced upwardly and outwardly extending arms at the outer periphery thereof, said hub having all portions of its upper surface formed at an angle to the central axis, a flange on the hub extending downwardly and outwardly, means to secure the hub on a drive shaft, a deflecting member in the form of a truncated cone, adapted to be positioned by the arms of the spider, and means to secure the deflecting member to the arms, said deflecting member being positioned substantially parallel to the flange on the hub with its upper portion overhanging the upper surface of the hub and its lower portion extending beyond and beneath the periphery of the hub.

WILLIAM SPENCER BOWEN. 

